Mike Hoerger, PhD MSCR MBA Profile picture
Oct 17, 2023 11 tweets 4 min read Read on X
Did you know, you can still access recent national C0VID #wastewater data in the U.S.?

I'll walk you though it.

🧵
1/ Verily national wastewater graph
First, go to Verily's #wastewater website.


Click on the little Line Graph icon on the left side.

2/ data.wastewaterscan.org
Click the line graph icon
When you click on the Line Graph icon, it makes an annoying pop-up.

In the 1st menu, choose SARS-CoV-2.

In the 2nd menu, click *ANY* location. We want national, but they don't include it there. So pick anywhere, and we'll fix it later.

3/ Useless pop-up window
Click the "Get Started" button. Then you'll see something like this. It's the recent wastewater data at whatever rando site you selected.

Again, this is not what we want yet.

4/ Recent wastewater data at one rando site
Now, click to the right of the magnifying glass by "Location(s)" --> then "National" --> then "All Wastewater Sites"

5/ Location pop-up menu
The graph that will come up is overwhelming. No data synthesis. We're getting closer though.

Click the little crossed out eyeball I've circled in red.

6/ Graph of all wastewater data. No national average.
Woo-hoo. We finally have a national average line. I can see why the CDC prefers this over Biobot. 🤣

Click a number on the vertical access and drag up or down (it moves opposite of how I expect). Play around with the start date too. See red circles.

7/ Verily data with national average.
I like to see either the entire pandemic (big picture) or the last 6-7 months (current wave, shown).

8/ Data focused on the current wave
If you zoom out to see the entire pandemic, you'll find a similar picture relative to what you may have been tracking with Biobot, Walgreens, etc.

The waves show up. The estimates of magnitude vary by methodology.

9/

I hope to post an interim Biobot-to-Verily PMC forecast Monday.

I stand by prior forecasts. We'll reach the bottom of the current (very high) valley in 1-2 wks. Cases will pick up noticeably so around mid-November and get very very bad in Dec/Jan.

10/
Point of clarification: Verily data are included in this dashboard, but others have noted Verily does not own the dashboard. The language on their website is ambiguous in this regard, IMO (pic below). It's the first link on Verily's page.

Others report that as CDC Biobot sites come on, they will be included in a Verily-specific dashboard, independent of that above. It seems that rather than harmonizing and unifying data, we are at risk of proliferating more and potentially lower quality dashboards.

11/
Verily's web page begins by linking to a comprehensive dashboard that they reportedly do not own. Their own limited dashboard follows below on the page.

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More from @michael_hoerger

Nov 3
PMC COVlD Update, Nov 3, 2025 (U.S.)
1 of 9 🧵

The relative "lull" in SARS-CoV-2 transmission is unlikely to go much lower.

✨1 in 209 people are estimated actively infectious, likely the lowest levels of 2025 nationwide.

Get boosted. Stock up on masks, tests, & filters. Year-over-year graph
PMC COVlD Update, Nov 3, 2025 (U.S.)
2 of 9 🧵

No data presently suggest the rise of a winter wave any earlier than "usual."

If following historical trends, transmission will pick up Nov 15-29. Last year's rise was atypically late. Forecasted transmission
PMC COVlD Update, Nov 3, 2025 (U.S.)
3 of 9 🧵

Expect rising misinformation/disinformation as transmission heats up:
🔹Abuse of community notes, particularly surrounding wastewater methodology
🔹Paid bot army attacks, especially about boosters & masks
Read 9 tweets
Oct 28
PMC COVlD Update, Oct 27, 2025 (US)

Transmission typically accelerates in mid-November.

We are currently in a relative 'lull.' We estimate about a quarter-million new daily infections with 1 in 185 people actively infectious. Still bad, likely to get worse.

1/9 🧵 year over year graph
PMC COVlD Update, Oct 27, 2025 (US)

Our forecast through November 8 calls for flat transmission.

Nothing yet indicates the onset of a winter wave, but it would also be atypical for the lull to last much longer than another 2-3 weeks.

2/9 🧵 Graph of recent transmission and current forecast
PMC COVlD Update, Oct 27, 2025 (US)

We estimate 264,000 new daily infections during this 'lull' period.

Biobot data have returned. Our substitute data from WWS last week correlated r=.97 (near perfect) with that, but Biobot did retroactively increase recent estimates.

3/9 🧵 Graph of the 11 waves of the pandemic
Read 9 tweets
Oct 21
PMC COVlD Update, Oct 20, 2025 (U.S.)

SARS-CoV-2 transmission has fallen.
🔹1 in 191 (0.5%) actively infectious
🔹"Lull" levels at 20% of the summer peak
🔹255,000 new daily infections (still concerning)

Many will knock out higher-risk activities the next 2-4 weeks.
🧵1/11 Graph of the 11 waves, shows current lull.
PMC COVlD Update, Oct 20, 2025 (U.S.)

"Lull" transmission remains dangerous:
🔹1.8 million estimated new weekly infections
🔹>90,000 estimated new #LongCOVID conditions from this week's infections
🔹>500 excess deaths to result from this week's infections

🧵2/11 Infections						 Proportion Actively Infectious										1 in 191 (0.5%) New Daily Infections										 255,000  Infections the Past Week										 1,800,000  Infections in 2025										 191,000,000  Cumulative Infections per Person										 4.69  										 Long COVID										 Long COVID Cases Resulting								13,000 to 51,000		   from New Daily Infections										 Long COVID Cases Resulting								90,000 to 360,000		   from New Weekly Infections										 										 Excess Deaths										 Excess Deaths Resulting 									70 to 120	   from New Daily Infections										 Excess Deaths ...
PMC COVlD Update, Oct 20, 2025 (U.S.)

Exposure risk during "lull" transmission remains high when engaging in many social interactions.

Interacting with 25 people yields a 12% chance of exposure. 100 people? 41% chance of exposure, assuming no testing/isolation.

🧵3/11 Number of People		Chances Anyone is Infectious		 1				0.5% 2				1.0% 3				1.6% 4				2.1% 5				2.6% 10				5.1% 15				7.6% 20				10.0% 25				12.3% 30				14.5% 50				23.1% 75				32.5% 100				40.8% 200				64.9% 300				79.2%
Read 11 tweets
Oct 11
PMC COVlD Wave Update (Europe)
11 October 2025 🧵

The PMC website includes an international directory of websites with COVlD wastewater monitoring. It is more up to date than the directories of the EU and WHO.

Let's review what's happening in Europe...

1/ world map, nations with surveillance shown in blue. URL says pmc19.com/global
Data in #Austria show a rising COVlD wave. The x axis (bottom) has infrequent labels, but the data shown go through October 8th.

Find more here:

2/ pmc19.com/austrialongitudinal graph
COVlD levels have been percolating in #Belgium, with "moderate" levels overall.

The transmission pattern is similar across regions. Plants at Namur-Brumagne and Oostende report "high" levels.



3/ pmc19.com/belgiumheat map and longitudinal graph
Read 20 tweets
Oct 5
PMC COVlD Update, Week of Oct 6, 2025 (U.S.)
🧵1/9

An estimated 1 in 81 people are actively infectious during the ongoing 11th wave.

The "shutdown" has created a blackout at the state level.

Transmission is half that of the peak one month ago, and we anticipate a relative national "lull" in early-to-mid November, albeit still at dangerous levels.

Our model uses a combination of CDC and Biobot data, so we are able to estimate national statistics despite the CDC data going offline. On the map, note that Puerto Rico continues to update; they use a CDC-style system but were dropped by the CDC long ago. For full methodology, review the technical appendix on the website.Heat map, grayed out. 1 in 81 estimated actively infectious, or 602,000 new daily infections, per wastewater-derived estimates.
PMC COVlD Update, Week of Oct 6, 2025 (U.S.)
🧵2/9

#DuringCOVID is today. We estimate >600,000 new daily infections. This is about half the peak on September 6.

Notice current levels are similar to the estimated peaks of the first 3 waves. 11 wave graph
PMC COVlD Update, Week of Oct 6, 2025 (U.S.)
🧵3/9

Weekly estimates:
🔹4.5 million infections
🔹>200,000 resulting long-term health conditions
🔹>1,300 resulting excess deaths Infections						Oct 6, 2025				pmc19.com/data Proportion Actively Infectious										1 in 81 (1.2%) New Daily Infections										 602,000  Infections the Past Week										 4,540,000  Infections in 2025										 189,000,000  Cumulative Infections per Person										 4.69  										 Long COVID										 Long COVID Cases Resulting								30,000 to 120,000		   from New Daily Infections										 Long COVID Cases Resulting								227,000 to 910,000		   from New Weekly Infections										 										 Excess Deaths										 Excess Deaths Resulting 									170 to 280	   from New Daily Infe...
Read 9 tweets
Oct 3
BREAKING: 3 State Pharmacy Boards Still Block COVlD Boosters without a Prescription

ACIP voted against prescriptions for boosters & 47 states + DC follow that guidance.

Georgia, Missouri, & Louisiana require prescriptions.

Key points in my letter to the pharmacy boards. 🧵1/7 Map shows only Missouri, Louisiana, and Georgia are blocking residents from routing COVlD boosters unless they have a prescription.
Georgia law indicates that the pharmacy board is to follow ACIP. They do not dictate further nuance. Georgia continues to require prescriptions, going against the spirit of the law, ACIP, and 47 other states.

🧵2/7 Georgia:  State law does NOT require a prescription if it is a “vaccine that is included on the adult immunization schedule recommended by the Advisory Committee on Immunization Practices (ACIP)”1 ACIP voted against prescriptions, and 47 states have accepted that schedule.  The law does not mention a CDC Director sign-off, which may be delayed months. Act now to save lives.  1. https://law.justia.com/codes/georgia/title-43/chapter-34/article-2/section-43-34-26-1/
Louisiana law tells the pharmacy board to follow ACIP. ACIP says do not require a prescription, and 47 other states agree.

The Louisiana pharmacy board continues to require a prescription.

🧵3/7 Louisiana:  State law does NOT require a prescription if the “vaccine is administered in conformance with the most current immunization administration protocol as set forth by the United States Centers for Disease Control and Prevention Advisory Committee on Immunization Practice.” 2 ACIP voted against prescriptions, and 47 states have accepted that protocol.  The law does not mention a CDC Director sign-off, which may be delayed months. Act now to save lives.  2. https://law.justia.com/codes/louisiana/revised-statutes/title-37/rs-37-1218-1/
Read 7 tweets

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